news4's megan mcgrath is live at oak ton elementary. megan, good morning. >> reporter: good morning, eun. a lot going on here this morning. we are outside oakton elementary sco school in is cambridge road. later on today we're expecting a lot of activity as the area's largest school system, fairfax county, goes back to school. the kids back in class later on this morning. 181,000 students will be returning to class this morning, so you can expect to see lots of buses out there later on today as well as walkers. kids walking around on the neighborhood streets getting to school this morning. we're also going to, of course, have people returning from their labor day vacations. lots of folks returning to work for the first time in about a week. and so we're expecting a lot of traffic congestion out there. some have come to call this day terrible traffic tuesday. so motorists are asked to be particularly patient. give themselves a little extra time when getting to work later on today. now, there are two new schools opening up. south county m